I’m sure/ certain; no doubt that (に違いない) – Japanese Grammar に違いない (ni chigai nai)

Q: What JLPT level is に違いない?

JLPT N3 — Intermediate · Expressing nuance & contrast

Q: How do you use に違いない in a sentence?

Attach に違いない to the appropriate verb or noun form. I’m sure/ certain; no doubt that

Q: Is に違いない formal or casual Japanese?

に違いない can be used in both casual conversation and polite speech depending on context.

に違いない

N3 GRAMMAR ⏱ 0s study 📖 0 today

ni chigai nai

I’m sure/ certain; no doubt that

は別として wa betsu toshite 込む komu 上げる ageru まるで maru de てもしょうがない temo shou ga nai しかない shikanai というより to iu yori にかけて ni kakete わけだ wake da こと koto 向け muke として toshite て済む te sumu 一体 ittai ことは～が koto wa~ga にとって ni totte ばよかった ba yokatta 合う au ついに tsui ni は～で有名 wa~de yuumei は別として wa betsu toshite 込む komu 上げる ageru まるで maru de てもしょうがない temo shou ga nai しかない shikanai というより to iu yori にかけて ni kakete わけだ wake da こと koto 向け muke として toshite て済む te sumu 一体 ittai ことは～が koto wa~ga にとって ni totte ばよかった ba yokatta 合う au ついに tsui ni は～で有名 wa~de yuumei

🃏 Flashcard

に違いない

ni chigai nai

Tap to reveal usage

I’m sure/ certain; no doubt that

Tap to test your recall · +10 XP

📊 Pattern Stats

JLPT Level N3

Intermediate · Expressing nuance & contrast

Reading ni chigai nai

Post ID 50885

Patterns today 0

0 / 10 daily goal

📝 Usage Notes

I’m sure/ certain; no doubt that

🎯 Quick Quiz

What does this grammar pattern mean or do?

に違いない

📚 How to Master This Pattern

🔊

Say It Aloud

Press Hear it and repeat に違いない three times. Feel the rhythm — grammar patterns have a natural flow.

🃏

Flip Before Reading

Always try to recall the usage before flipping the card. Struggle = learning. Every failed recall makes the next one stick harder.

✍️

Write Two Sentences

Compose two original sentences using に違いない. One about yourself, one about something you see right now.

⏰

Spaced Review

Save this pattern and revisit at 10 min, 1 day, 3 days. Production (writing) beats recognition for grammar.

🔗 More JLPT N3 Patterns

← Previous

んだって

I hear that; heard that~

に反して

against; contrary to; in contrast to

❓ Frequently Asked Questions

What does the grammar pattern に違いない mean? ▼

I’m sure/ certain; no doubt that

What JLPT level is に違いない? ▼

JLPT N3 — Intermediate · Expressing nuance & contrast. To pass JLPT N3 you need to recognise and use this pattern correctly in reading and listening sections.

How do you use に違いない in a sentence? ▼

Attach に違いない (ni chigai nai) to the appropriate verb or noun form as described in the usage notes. Then try writing two original sentences — one about yourself and one about something around you.

Is に違いない formal or casual Japanese? ▼

に違いない is used in both casual and polite contexts. It appears frequently in everyday conversation, textbooks, and simple written materials.

How can I remember に違いない long-term? ▼

Use the flashcard on this page for active recall — see the pattern, reconstruct the usage from memory, then flip. Follow with the 4-choice quiz to distinguish it from similar patterns. Review at 10 minutes, 1 day and 3 days (spaced repetition). Writing two original sentences at each review session is the fastest way to reach production-level mastery.